Macworld started in 1985, but in this 1986 photo, it has a very '1984' vibe as Apple CEO John Sculley gives the keynote address. Macworld has been held at the Moscone Center in San Francisco every year since its inception. less

Macworld started in 1985, but in this 1986 photo, it has a very '1984' vibe as Apple CEO John Sculley gives the keynote address. Macworld has been held at the Moscone Center in San Francisco every year since ... more

Photo: MICHAEL MALONEY, Chronicle Archive

Macworld started in 1985, but in this 1986 photo, it has a very... Photo-4120043.56036 - seattlepi.com

Image 2 of 55

The Macworld Conference and Expo in 1989: MS-DOS was huge.

The Macworld Conference and Expo in 1989: MS-DOS was huge.

Photo: JOHN O'HARA, Chronicle Archive

The Macworld Conference and Expo in 1989: MS-DOS was huge. Photo-4120044.56036 - seattlepi.com

Image 3 of 55

The power of 'Mac-intosh' at the Moscone Center for Macworld in January 1991.

The power of 'Mac-intosh' at the Moscone Center for Macworld in January 1991.

Photo: DEANNE FITZMAURICE, Chronicle Archive

The power of 'Mac-intosh' at the Moscone Center for... Photo-4120045.56036 - seattlepi.com

Image 4 of 55

Susan Ortiz puts the finishing touches on the Apple display booth at Macworld in 1993.

Susan Ortiz puts the finishing touches on the Apple display booth at Macworld in 1993.

Olin Kahney, 9, carries an iPod costume up the stairs at Macworld 2006 to promote his father's book 'The Cult of iPod.' Bonus: It works as an ultra-cool Halloween and 'standing in line for the release of the next iPod' costume. less

Olin Kahney, 9, carries an iPod costume up the stairs at Macworld 2006 to promote his father's book 'The Cult of iPod.' Bonus: It works as an ultra-cool Halloween and 'standing in line for the release of the ... more

Josh Gad, left, and Ashton Kutcher talk about portraying Steve Wozniak and Steve Jobs in the new film 'jOBS' at Macworld 2013 on Thursday. No word if the costume department was able to recreate Woz's epic sweater. less

Josh Gad, left, and Ashton Kutcher talk about portraying Steve Wozniak and Steve Jobs in the new film 'jOBS' at Macworld 2013 on Thursday. No word if the costume department was able to recreate Woz's epic ... more